/* ==========================================================================
   CSS Variables (Design Tokens)
   ========================================================================== */

:root {
    /* Brand Colors */
    --brand-primary: #667eea;
    --brand-secondary: #764ba2;
    --brand-gradient: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    
    /* Bootstrap Primary (for consistency) */
    --bs-primary-custom: #0d6efd;
    --bs-primary-hover: #0b5ed7;
    
    /* Light Theme Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --card-bg: #ffffff;
    --card-border: rgba(0, 0, 0, 0.125);
    
    /* Link Colors */
    --link-color: #0d6efd;
    --link-hover-color: #0b5ed7;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-xxl: 1rem;
    --radius-full: 50rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Theme Colors */
[data-theme="dark"] {
    --bg-primary: #1a202c;
    --bg-secondary: #2d3748;
    --bg-tertiary: #374151;
    --text-primary: #f7fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #a0aec0;
    --border-color: #4a5568;
    --card-bg: #2d3748;
    --card-border: #4a5568;
    --link-color: #90cdf4;
    --link-hover-color: #63b3ed;
}

/* Auto Dark Theme (System Preference) */
@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) {
        --bg-primary: #1a202c;
        --bg-secondary: #2d3748;
        --bg-tertiary: #374151;
        --text-primary: #f7fafc;
        --text-secondary: #e2e8f0;
        --text-muted: #a0aec0;
        --border-color: #4a5568;
        --card-bg: #2d3748;
        --card-border: #4a5568;
        --link-color: #90cdf4;
        --link-hover-color: #63b3ed;
    }
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

html {
  font-size: 14px;
  transition: background-color var(--transition-base), color var(--transition-base);
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* ==========================================================================
   Theme Toggle Button
   ========================================================================== */

#theme-toggle {
    background: none;
    border: none;
    padding: var(--spacing-sm);
    cursor: pointer;
    transition: transform var(--transition-fast);
}

#theme-toggle:hover {
    transform: scale(1.1);
}

#theme-toggle i {
    font-size: 1.25rem;
}

/* ==========================================================================
   Dark Mode Base Styles
   ========================================================================== */

[data-theme="dark"] body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .navbar {
    background-color: var(--bg-secondary) !important;
}

[data-theme="dark"] .container {
    background-color: var(--bg-primary);
}

[data-theme="dark"] .card {
    background-color: var(--card-bg);
    border-color: var(--card-border);
    color: var(--text-primary);
}

[data-theme="dark"] .footer {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-muted);
}

[data-theme="dark"] a {
    color: var(--link-color);
}

[data-theme="dark"] a:hover {
    color: var(--link-hover-color);
}

[data-theme="dark"] .text-muted {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .footer a {
    color: var(--text-muted);
}

[data-theme="dark"] .footer a:hover {
    color: var(--text-secondary);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
    background-color: var(--bg-secondary);
    border-color: var(--brand-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .form-text {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .form-label {
    color: var(--text-secondary);
}

[data-theme="dark"] .btn-outline-primary {
    color: var(--brand-primary);
    border-color: var(--brand-primary);
}

[data-theme="dark"] .btn-outline-primary:hover {
    background-color: var(--brand-primary);
    color: white;
}

[data-theme="dark"] .table {
    color: var(--text-primary);
}

[data-theme="dark"] .table-striped tbody tr:nth-of-type(odd) {
    background-color: var(--bg-secondary);
}

[data-theme="dark"] .modal-content {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer {
    border-color: var(--border-color);
}

[data-theme="dark"] .alert-info {
    background-color: #1e3a5f;
    border-color: #2c5282;
    color: #bee3f8;
}

[data-theme="dark"] .alert-warning {
    background-color: #744210;
    border-color: #975a16;
    color: #feebc8;
}

[data-theme="dark"] .alert-danger {
    background-color: #742a2a;
    border-color: #9b2c2c;
    color: #fed7d7;
}

[data-theme="dark"] .alert-success {
    background-color: #22543d;
    border-color: #276749;
    color: #c6f6d5;
}

[data-theme="dark"] .list-group-item {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .list-group-item-action {
    color: var(--text-primary);
}

[data-theme="dark"] .list-group-item-action:hover,
[data-theme="dark"] .list-group-item-action:focus {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] .list-group-item h5,
[data-theme="dark"] .list-group-item .mb-1 {
    color: var(--text-primary);
}

[data-theme="dark"] .list-group-item small {
    color: var(--text-secondary);
}

[data-theme="dark"] .list-group-item .text-muted {
    color: var(--text-muted) !important;
}

/* Also support system preference when not explicitly set */
@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) body {
        background-color: var(--bg-primary);
        color: var(--text-primary);
    }

    html:not([data-theme="light"]) .navbar {
        background-color: var(--bg-secondary) !important;
    }

    html:not([data-theme="light"]) .container {
        background-color: var(--bg-primary);
    }

    html:not([data-theme="light"]) .card {
        background-color: var(--card-bg);
        border-color: var(--card-border);
        color: var(--text-primary);
    }

    html:not([data-theme="light"]) .footer {
        background-color: transparent;
        border-color: var(--border-color);
        color: var(--text-muted);
    }

    html:not([data-theme="light"]) a {
        color: var(--link-color);
    }

    html:not([data-theme="light"]) a:hover {
        color: var(--link-hover-color);
    }

    html:not([data-theme="light"]) .text-muted {
        color: var(--text-muted) !important;
    }

    html:not([data-theme="light"]) .form-control,
    html:not([data-theme="light"]) .form-select {
        background-color: var(--bg-secondary);
        border-color: var(--border-color);
        color: var(--text-primary);
    }

    html:not([data-theme="light"]) .form-control:focus,
    html:not([data-theme="light"]) .form-select:focus {
        background-color: var(--bg-secondary);
        border-color: var(--brand-primary);
        color: var(--text-primary);
    }

    html:not([data-theme="light"]) .form-text {
        color: var(--text-muted) !important;
    }

    html:not([data-theme="light"]) .form-label {
        color: var(--text-secondary);
    }

    html:not([data-theme="light"]) .table {
        color: var(--text-primary);
    }

    html:not([data-theme="light"]) .table-striped tbody tr:nth-of-type(odd) {
        background-color: var(--bg-secondary);
    }

    html:not([data-theme="light"]) .modal-content {
        background-color: var(--bg-secondary);
        color: var(--text-primary);
    }

    html:not([data-theme="light"]) .modal-header,
    html:not([data-theme="light"]) .modal-footer {
        border-color: var(--border-color);
    }

    html:not([data-theme="light"]) .alert-info {
        background-color: #1e3a5f;
        border-color: #2c5282;
        color: #bee3f8;
    }

    html:not([data-theme="light"]) .alert-warning {
        background-color: #744210;
        border-color: #975a16;
        color: #feebc8;
    }

    html:not([data-theme="light"]) .alert-danger {
        background-color: #742a2a;
        border-color: #9b2c2c;
        color: #fed7d7;
    }

    html:not([data-theme="light"]) .alert-success {
        background-color: #22543d;
        border-color: #276749;
        color: #c6f6d5;
    }

    html:not([data-theme="light"]) .list-group-item {
        background-color: var(--card-bg);
        border-color: var(--border-color);
        color: var(--text-primary);
    }

    html:not([data-theme="light"]) .list-group-item-action {
        color: var(--text-primary);
    }

    html:not([data-theme="light"]) .list-group-item-action:hover,
    html:not([data-theme="light"]) .list-group-item-action:focus {
        background-color: var(--bg-secondary);
        color: var(--text-primary);
    }

    html:not([data-theme="light"]) .list-group-item h5,
    html:not([data-theme="light"]) .list-group-item .mb-1 {
        color: var(--text-primary);
    }

    html:not([data-theme="light"]) .list-group-item small {
        color: var(--text-secondary);
    }

    html:not([data-theme="light"]) .list-group-item .text-muted {
        color: var(--text-muted) !important;
    }
}

/* ==========================================================================
   Form Styles
   ========================================================================== */

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}

/* ==========================================================================
   Button Overrides for Better Contrast
   ========================================================================== */

/* Improve contrast for warning buttons */
.btn-warning {
    background-color: #f59e0b;
    border-color: #f59e0b;
    color: #000000;
    font-weight: 600;
}

.btn-warning:hover {
    background-color: #d97706;
    border-color: #d97706;
    color: #000000;
}

.btn-warning:focus,
.btn-warning:active {
    background-color: #b45309;
    border-color: #b45309;
    color: #000000;
    box-shadow: 0 0 0 0.25rem rgba(245, 158, 11, 0.5);
}

/* Dark mode adjustments */
[data-theme="dark"] .btn-warning {
    background-color: #f59e0b;
    border-color: #f59e0b;
    color: #000000;
}

[data-theme="dark"] .btn-warning:hover {
    background-color: #fbbf24;
    border-color: #fbbf24;
    color: #000000;
}

@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) .btn-warning {
        background-color: #f59e0b;
        border-color: #f59e0b;
        color: #000000;
    }

    html:not([data-theme="light"]) .btn-warning:hover {
        background-color: #fbbf24;
        border-color: #fbbf24;
        color: #000000;
    }
}